From 5587260cbead244777fd53764c410994043e23bb Mon Sep 17 00:00:00 2001 From: Patrice Mandin Date: Sat, 27 Sep 2003 08:20:26 +0000 Subject: [PATCH] Atari CD-ROM support --- README.MiNT | 12 +- configure.in | 5 +- src/cdrom/Makefile.am | 1 + src/cdrom/mint/Makefile.am | 8 + src/cdrom/mint/SDL_syscdrom.c | 465 ++++++++++++++++++++++++++++++++++ 5 files changed, 482 insertions(+), 9 deletions(-) create mode 100644 src/cdrom/mint/Makefile.am create mode 100644 src/cdrom/mint/SDL_syscdrom.c diff --git a/README.MiNT b/README.MiNT index 267c433e1..bc59f641b 100644 --- a/README.MiNT +++ b/README.MiNT @@ -48,13 +48,11 @@ Keyboard (GEMDOS, BIOS, GEM, Ikbd) Mouse (XBIOS, GEM, Ikbd) Video (XBIOS (Fullscreen), GEM (Windowed and Fullscreen)) Timer (VBL vector, GNU pth library) -Joystick and joypad support (Ikbd, Hardware) -Audio support (Hardware, XBIOS, GSXB, MCSN, STFA, /dev/audio if threads enabled) -Threads support (Multitasking OS only via GNU pth library) -Shared object support (using LDG library from http://ldg.atari.org/) - -- What is missing: -CDROM support (Metados, /dev/cdrom) +Joystick and joypad (Ikbd, Hardware) +Audio (Hardware, XBIOS, GSXB, MCSN, STFA, /dev/audio if threads enabled) +Threads (Multitasking OS only via GNU pth library) +Shared object loader (using LDG library from http://ldg.atari.org/) +Audio CD (MetaDOS) - Driver combinations: Video Kbd Mouse Timer Joystick diff --git a/configure.in b/configure.in index d3cc38c60..32a5cd9c1 100644 --- a/configure.in +++ b/configure.in @@ -2503,8 +2503,8 @@ case "$target" in fi # Set up files for the cdrom library if test x$enable_cdrom = xyes; then - CDROM_SUBDIRS="$CDROM_SUBDIRS dummy" - CDROM_DRIVERS="$CDROM_DRIVERS dummy/libcdrom_dummy.la" + CDROM_SUBDIRS="$CDROM_SUBDIRS mint" + CDROM_DRIVERS="$CDROM_DRIVERS mint/libcdrom_mint.la" fi # Set up files for the thread library if test x$enable_threads = xyes; then @@ -2765,6 +2765,7 @@ src/cdrom/freebsd/Makefile src/cdrom/linux/Makefile src/cdrom/macos/Makefile src/cdrom/macosx/Makefile +src/cdrom/mint/Makefile src/cdrom/openbsd/Makefile src/cdrom/osf/Makefile src/cdrom/qnx/Makefile diff --git a/src/cdrom/Makefile.am b/src/cdrom/Makefile.am index bec395430..b0551b606 100644 --- a/src/cdrom/Makefile.am +++ b/src/cdrom/Makefile.am @@ -15,6 +15,7 @@ DIST_SUBDIRS = \ linux \ macos \ macosx \ + mint \ openbsd \ osf \ qnx \ diff --git a/src/cdrom/mint/Makefile.am b/src/cdrom/mint/Makefile.am new file mode 100644 index 000000000..362af6ac4 --- /dev/null +++ b/src/cdrom/mint/Makefile.am @@ -0,0 +1,8 @@ + +## Makefile.am for the MiNT+MetaDOS cdrom driver for SDL + +noinst_LTLIBRARIES = libcdrom_mint.la +libcdrom_mint_la_SOURCES = $(SRCS) + +# The SDL cdrom driver sources +SRCS = SDL_syscdrom.c diff --git a/src/cdrom/mint/SDL_syscdrom.c b/src/cdrom/mint/SDL_syscdrom.c new file mode 100644 index 000000000..081a880c1 --- /dev/null +++ b/src/cdrom/mint/SDL_syscdrom.c @@ -0,0 +1,465 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@libsdl.org +*/ + +#ifdef SAVE_RCSID +static char rcsid = + "@(#) $Id$"; +#endif + +/* + Atari MetaDOS CD-ROM functions + + Patrice Mandin +*/ + +#include +#include +#include +#include + +#include +#include + +#include "SDL_error.h" +#include "SDL_cdrom.h" +#include "SDL_syscdrom.h" + + +/* The maximum number of CD-ROM drives we'll detect */ +#define MAX_DRIVES 32 + +/* Type of CD-ROM drive */ +#define DRIVE_TYPE_NOCD -1 +#define DRIVE_TYPE_STANDARD 0 +#define DRIVE_TYPE_CDAR 1 + +typedef struct { + int type; /* Standard, or old CDAR-type CD drive ? */ + unsigned char device[3]; /* Physical device letter + ':' + '\0' */ + metaopen_t metaopen; /* Infos on opened drive */ +} metados_drive_t; + +static metados_drive_t metados_drives[MAX_DRIVES]; + +/* The system-dependent CD control functions */ +static const char *SDL_SYS_CDName(int drive); +static int SDL_SYS_CDOpen(int drive); +static void SDL_SYS_CDClose(SDL_CD *cdrom); +static int SDL_SYS_CDioctl(int id, int command, void *arg); + +/* Commands using ioctl() */ +static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); +static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); +static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); +static int SDL_SYS_CDPause(SDL_CD *cdrom); +static int SDL_SYS_CDResume(SDL_CD *cdrom); +static int SDL_SYS_CDStop(SDL_CD *cdrom); +static int SDL_SYS_CDEject(SDL_CD *cdrom); + +/* Commands using Meta*() CDAR functions */ +static int SDL_SYS_CD_BcdToBinary(int value); +static int SDL_SYS_CDGetTOC_CDAR(SDL_CD *cdrom); +static CDstatus SDL_SYS_CDStatus_CDAR(SDL_CD *cdrom, int *position); + +int SDL_SYS_CDInit(void) +{ + metainit_t metainit={0,0,0,0}; + metaopen_t metaopen; + int i, handle; + + Metainit(&metainit); + if (metainit.version == NULL) { +#ifdef DEBUG_CDROM + fprintf(stderr, "MetaDOS not installed\n"); +#endif + return -1; + } + + if (metainit.drives_map == 0) { +#ifdef DEBUG_CDROM + fprintf(stderr, "No MetaDOS devices present\n"); +#endif + return -1; + } + + SDL_numcds = 0; + + for (i='A'; i<='Z'; i++) { + metados_drives[SDL_numcds].type = DRIVE_TYPE_NOCD; + metados_drives[SDL_numcds].device[0] = 0; + metados_drives[SDL_numcds].device[1] = ':'; + metados_drives[SDL_numcds].device[2] = 0; + + if (metainit.drives_map & (1<<(i-'A'))) { + handle = Metaopen(i, &metaopen); + if (handle == 0) { + + if ( (metaopen.name[0]=='C') && (metaopen.name[1]=='D') && + (metaopen.name[2]=='A') && (metaopen.name[3]=='R')) { + /* Drive compatible with CDAR */ + metados_drives[SDL_numcds].type = DRIVE_TYPE_CDAR; + metados_drives[SDL_numcds].device[0] = i; + ++SDL_numcds; + } else { + /* Check for a CD-ROM device */ + if ((Metastatus(i, NULL) & 0x7fff) >= 0) { + /* Drive compatible with new ioctl functions */ + metados_drives[SDL_numcds].type = DRIVE_TYPE_STANDARD; + metados_drives[SDL_numcds].device[0] = i; + ++SDL_numcds; + } + } + + Metaclose(i); + } + } + } + + /* Fill in our driver capabilities */ + SDL_CDcaps.Name = SDL_SYS_CDName; + SDL_CDcaps.Open = SDL_SYS_CDOpen; + SDL_CDcaps.Close = SDL_SYS_CDClose; + + SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; + SDL_CDcaps.Status = SDL_SYS_CDStatus; + SDL_CDcaps.Play = SDL_SYS_CDPlay; + SDL_CDcaps.Pause = SDL_SYS_CDPause; + SDL_CDcaps.Resume = SDL_SYS_CDResume; + SDL_CDcaps.Stop = SDL_SYS_CDStop; + SDL_CDcaps.Eject = SDL_SYS_CDEject; + + return 0; +} + +void SDL_SYS_CDQuit(void) +{ + SDL_numcds = 0; +} + +static const char *SDL_SYS_CDName(int drive) +{ + return(metados_drives[drive].device); +} + +static int SDL_SYS_CDOpen(int drive) +{ + int handle; + + handle = Metaopen(metados_drives[drive].device[0], &(metados_drives[drive].metaopen)); + if (handle == 0) { + return drive; + } + + return -1; +} + +static void SDL_SYS_CDClose(SDL_CD *cdrom) +{ + Metaclose(metados_drives[cdrom->id].device[0]); +} + +static int SDL_SYS_CDioctl(int id, int command, void *arg) +{ + int retval; + + retval = Metaioctl(metados_drives[id].device[0], METADOS_IOCTL_MAGIC, command, arg); + if ( retval < 0 ) { + SDL_SetError("ioctl() error: %s", strerror(errno)); + } + return(retval); +} + +static int SDL_SYS_CD_BcdToBinary(int value) +{ + int tmp; + + tmp = (value>>4) & 0xf; + return (tmp*10)+(value & 0xf); +} + +static int SDL_SYS_CDGetTOC_CDAR(SDL_CD *cdrom) +{ + int errorcode, i, minute, second, frame; + metatocentry_t *toc_entries; + metadiscinfo_t disc_info; + + /* First, read disc info */ + errorcode = Metadiscinfo(metados_drives[cdrom->id].device[0], &disc_info); + if (errorcode<0) { +#ifdef DEBUG_CDROM + fprintf(stderr, "Can not read disc info\n"); +#endif + return -1; + } + + cdrom->numtracks = disc_info.last - disc_info.first + 1; + + /* Then read toc entries for tracks */ + toc_entries = (metatocentry_t *)malloc(100*sizeof(metatocentry_t)); + if (toc_entries == NULL) { +#ifdef DEBUG_CDROM + fprintf(stderr, "Can not allocate memory for TOC entries\n"); +#endif + return -1; + } + + errorcode = Metagettoc(metados_drives[cdrom->id].device[0], 0, toc_entries); + if (errorcode<0) { +#ifdef DEBUG_CDROM + fprintf(stderr, "Can not read TOC\n"); +#endif + free(toc_entries); + return -1; + } + + i=0; + for (;;) { + if ((toc_entries[i].track==0) && (toc_entries[i].minute==0) && + (toc_entries[i].second==0) && (toc_entries[i].frame==0) + ) { + break; + } + + if (toc_entries[i].track == CDROM_LEADOUT_CDAR) { + cdrom->track[i].id = CDROM_LEADOUT; + } else { + cdrom->track[i].id = toc_entries[i].track; + } + if (disc_info.disctype == 0) { + cdrom->track[i].type = SDL_AUDIO_TRACK; + } else { + cdrom->track[i].type = SDL_DATA_TRACK; + } + minute = SDL_SYS_CD_BcdToBinary(toc_entries[i].minute); + second = SDL_SYS_CD_BcdToBinary(toc_entries[i].second); + frame = SDL_SYS_CD_BcdToBinary(toc_entries[i].frame); + cdrom->track[i].offset = MSF_TO_FRAMES(minute, second, frame); + + if ( i > 0 ) { + cdrom->track[i-1].length = cdrom->track[i].offset - cdrom->track[i-1].offset; + } + + ++i; + } + + free(toc_entries); + return 0; +} + +static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) +{ + int i,okay; + struct cdrom_tochdr toc; + struct cdrom_tocentry entry; + + /* CDAR compatible drive ? */ + if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) { + return SDL_SYS_CDGetTOC_CDAR(cdrom); + } + + /* Use standard ioctl() */ + if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)<0) { + return -1; + } + + cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1; + if ( cdrom->numtracks > SDL_MAX_TRACKS ) { + cdrom->numtracks = SDL_MAX_TRACKS; + } + + /* Read all the track TOC entries */ + okay=1; + for ( i=0; i<=cdrom->numtracks; ++i ) { + if ( i == cdrom->numtracks ) { + cdrom->track[i].id = CDROM_LEADOUT; + } else { + cdrom->track[i].id = toc.cdth_trk0+i; + } + entry.cdte_track = cdrom->track[i].id; + entry.cdte_format = CDROM_MSF; + if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY, &entry) < 0 ) { + okay=0; + break; + } else { + if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) { + cdrom->track[i].type = SDL_DATA_TRACK; + } else { + cdrom->track[i].type = SDL_AUDIO_TRACK; + } + cdrom->track[i].offset = MSF_TO_FRAMES( + entry.cdte_addr.msf.minute, + entry.cdte_addr.msf.second, + entry.cdte_addr.msf.frame); + cdrom->track[i].length = 0; + if ( i > 0 ) { + cdrom->track[i-1].length = cdrom->track[i].offset-cdrom->track[i-1].offset; + } + } + } + + return(okay ? 0 : -1); +} + +/* Get CD-ROM status */ +static CDstatus SDL_SYS_CDStatus_CDAR(SDL_CD *cdrom, int *position) +{ + return CD_ERROR; +} + +static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) +{ + CDstatus status; + struct cdrom_tochdr toc; + struct cdrom_subchnl info; + + /* CDAR compatible drive ? */ + if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) { + return SDL_SYS_CDStatus_CDAR(cdrom, position); + } + + /* Standard ioctl */ + info.cdsc_format = CDROM_MSF; + if ( SDL_SYS_CDioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) { + status = CD_TRAYEMPTY; + } else { + switch (info.cdsc_audiostatus) { + case CDROM_AUDIO_INVALID: + case CDROM_AUDIO_NO_STATUS: + /* Try to determine if there's a CD available */ + if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0) { + status = CD_STOPPED; + } else { + status = CD_TRAYEMPTY; + } + break; + case CDROM_AUDIO_COMPLETED: + status = CD_STOPPED; + break; + case CDROM_AUDIO_PLAY: + status = CD_PLAYING; + break; + case CDROM_AUDIO_PAUSED: + /* Workaround buggy CD-ROM drive */ + if ( info.cdsc_trk == CDROM_LEADOUT ) { + status = CD_STOPPED; + } else { + status = CD_PAUSED; + } + break; + default: + status = CD_ERROR; + break; + } + } + if ( position ) { + if ( status == CD_PLAYING || (status == CD_PAUSED) ) { + *position = MSF_TO_FRAMES( + info.cdsc_absaddr.msf.minute, + info.cdsc_absaddr.msf.second, + info.cdsc_absaddr.msf.frame); + } else { + *position = 0; + } + } + return(status); +} + +/* Start play */ +static int SDL_SYS_CDPlay_CDAR(SDL_CD *cdrom, int start, int length) +{ + struct cdrom_msf playtime; + + FRAMES_TO_MSF(start, + &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0); + FRAMES_TO_MSF(start+length, + &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1); + + return Metasetsongtime(metados_drives[cdrom->id].device[0], 0, + (playtime.cdmsf_min0<<16)|(playtime.cdmsf_sec0<<8)|(playtime.cdmsf_frame0), + (playtime.cdmsf_min1<<16)|(playtime.cdmsf_sec1<<8)|(playtime.cdmsf_frame1) + ); +} + +static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) +{ + struct cdrom_msf playtime; + + /* CDAR compatible drive ? */ + if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) { + return SDL_SYS_CDPlay_CDAR(cdrom, start, length); + } + + FRAMES_TO_MSF(start, + &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0); + FRAMES_TO_MSF(start+length, + &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1); +#ifdef DEBUG_CDROM + fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", + playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, + playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); +#endif + return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime)); +} + +/* Pause play */ +static int SDL_SYS_CDPause(SDL_CD *cdrom) +{ + /* CDAR compatible drive ? */ + if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) { + return -1; + } + + return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0)); +} + +/* Resume play */ +static int SDL_SYS_CDResume(SDL_CD *cdrom) +{ + /* CDAR compatible drive ? */ + if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) { + return -1; + } + + return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0)); +} + +/* Stop play */ +static int SDL_SYS_CDStop(SDL_CD *cdrom) +{ + /* CDAR compatible drive ? */ + if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) { + return Metastopaudio(metados_drives[cdrom->id].device[0]); + } + + return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0)); +} + +/* Eject the CD-ROM */ +static int SDL_SYS_CDEject(SDL_CD *cdrom) +{ + /* CDAR compatible drive ? */ + if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) { + return -1; + } + + return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0)); +}